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I. GREGG. MODE O-P DRYING BRICKS.

No. 66.486. PatentedJuly 9, 1867.

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ISAAC GREGG, OF PHILADELPHIA, PENNSYLVANIA.

Letters Patent No. 66,486, dated July 9, 1867. I

IMPROVED MODE 0]? DRYING BRIGKSJ TO ALL WHOM IT MAY CONCERN: I 7

Be it known that I, ISAAC GREGG, of Philadelphia, Pennsylvania, have invented an Improved Apparatus for Drying ."Bnrcks, etc.; and I do hereby declare the following to be a. full, clear, and exact description of the same, reference being bad to the accompanying drawing, and'to the letters of reference marked thereon.

My invention consists of an apparatus. constructed as fully described hereafter, whereby bricks or other articles of claymay be economically dried to any required extent and without the necessity of handling them after they are removed from. the mould and while in aplastic state.

In order to enable others skilled in the art to make and use my' invention, I will now proceed to describe its construction and operation, reference being bad to the accompanying drawing, which forms apart of this specification, and in which- Figure Tie a sectional elevation of my improved apparatus for drying bricks, tiles, etc.; and

Figure 2 is a sectional plan on the line 1-2, g. 1. l i I Ais an oven which, in the present instance, consists of a double metal casing, the outer and inner shells a aof this casing enclosing a chamber, X to which steam is admitted through a pipe, I). In each end of the oven is an opening, at the top isa. safety-valve, I;' and from the lower side projects a waste-water pipe, 02, in which is a suitable cock. In standards D D D, near the-opposite ends of the oven, turn shafts E F, and to one end of the shaft E is secured a pulley, c, which receives a' band from a pulley on .pn adjacent drivingshaft. To each of the shafts E -F are secured grooved pulleys 7t 71, round which pass endless bands, e e, the latter extending through and beneath theoven, as'shown in 1. In-brackets secured'within the oven to the lower side of the casing a turn the journal s ofrollers i i, on which bear the. chainsee, and in brackets secured to the lower side of't'he outer casingd turn th e journals'of rollers z" i, against'which thechains e e also hear. A rotary motion in .thevdirection of its arrow is imparted to the shaft. E, and oif-bearings'boards, y, (as fast as they'receive bricks or other articles from the moulds in which they are formed,) are placed on the chains e e above or near to the shaft E, the said boards and their contents being carried ,by the movement of the chains through the opening :v' into the Overland toward the shaft The oven is of such a length, and is maintained at such a temperature, and the belts e e move at such a speed, that the bricks or other articles, by the time they pass from the oven, will be dried suilioieut to allow of their being removed from the boards and packed in the kiln, When the oven is heated by steam-casings, as above described, its temperaturemay be suddenlyraised or'lowered, or it may be maintained uniformly at any required degree of heat, a result which could not-be efiected were the oven heated directly by fires, the waste of time and fuel from over-baking the articles, or the possibility of withdrawing them jbei'ore being sufliciently baked, being also prevented. As the bricks, from the" time they leave the moulduntilthey are packed in the kiln, receive but one handling, their form :is .better preserved, they are less liablotdheibra'ken or indented at the edges, and less time and labor is required, than when' the ordinary processioftransferring them while in a plastic state from the board to the drying-floor, and then from the latter to-the kiln, is practised. Tiles, drain pipes, and other articles of cluymay be dried. before being burned by means of. the above-described apparatus. The oven A may be constructed of brick, stone, or in any other suitable manner, and may beheatedby steam-casings placed at the' top and bottom of the same, or at the I sides only,or by coils of pipe'to which steam is admitted. An intermittent instead of auniform motion may also be imparted to the chainseh, and the rollers 1." iimoy be adjustable so as to take up any slack in the chains which-may be caused.bytheestrctching of the same. I I a I "Without confining myself to the precise construgtion and arrangement-of parts herein described, I'claim as my invention,and'desire-tosecure by Letters'Paten t An oven A, having openings at both ends, and containing or surrounded by one or more steam-casings or teamf'pipe's, in combination'with endless bands orchains e c, which extendthrpugh the oven, and to which either p uniform or an intermittent inotion'isi imparted, all substantially as andfor the purpose described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ISAAC GREGG.

Witnesses: I

Cues. E Fosrns, 'W. .L'R. Demure; 

